56812977 has 24 divisors (see below), whose sum is σ = 88745384. Its totient is φ = 34815744.

The previous prime is 56812969. The next prime is 56812981. The reversal of 56812977 is 77921865.

56812977 is a `hidden beast` number, since 568 + 12 + 9 + 77 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4626801 + 52186176 = 2151^2 + 7224^2 .

It is not a de Polignac number, because 56812977 - 2³ = 56812969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56812927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31533 + ... + 33285.

Almost surely, 2^56812977 is an apocalyptic number.

It is an amenable number.

56812977 is a deficient number, since it is larger than the sum of its proper divisors (31932407).

56812977 is a wasteful number, since it uses less digits than its factorization.

56812977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049 (or 2046 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 56812977 is about 7537.4383579569. The cubic root of 56812977 is about 384.4287406914.

The spelling of 56812977 in words is "fifty-six million, eight hundred twelve thousand, nine hundred seventy-seven".